Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
67 − 10 = ______
51 + 20 = ______
6 × 10 = ______
72 + 10 = ______
63 − 10 = ______
74 + 20 = ______
88 + 20 = ______
85 − 10 = ______
25 + 10 = ______
63 + 20 = ______
33 + 20 = ______
43 − 10 = ______
7 × 10 = ______
1 × 10 = ______
27 − 10 = ______
56 + 10 = ______
32 + 20 = ______
87 + 20 = ______
3 × 10 = ______
73 + 10 = ______
